Qnewbie

For the mainland China, I am thinking of

GOIP (or GSM box+SPA3000)<=> ET263_acc1(mainland) <=> ET263_acc2(HK) <=> Asterisk <=> PSTN/VOIP user

The main idea is simplicity of hardware, which requires almost no maintenance The drawback is obvious, it relies solely on ET263(you down I down).

(PS:請問有更便宜的嗎?)
Plz check the Betamax clone(be aware of no service from Betamax):
http://progx.ch/home-voip-prixbetamax-3-1-2.html
The server is located in Europe, which might have large delay from HK.

Qnewbie

回復 9# 角色


    Actually I have no idea about the voice quality as the GOIP is placed outside mainland China. The deployment is GOIP <=> Asterisk <=> VSP <=> China/Other destinations. Since VOIP is not blocked here, I don't feel any quality drop during calls to China.

The GOIP bought from DBL can communicate with ET263 thru encrypted stream, which increases the chance to break 15-minutes-limit.

YHFung C-hing, have you tested the VPN option?

Qnewbie

GOIP (outside China) <=> Asterisk (outside China) <=> VSP (Betamax, Germany?) <=> China/Other

Here the GOIP and Asterisk are within the same LAN(no encryption)。

What I mean is that, the GOIP might help us break the block with encryption in other provinces, which block all plain VOIP traffic including skype.

Qnewbie

I use mostly Betamax(as ping value is under 100ms) to make calls to China. I don't experience the quality degraded problem as calls are one-way(outside => China).

You might test with two Betamax(like www.nonoh.net) accounts(free!). As said, the delay might be large from HK.